var gulp = require('gulp');
var GulpSSH = require('gulp-ssh');

var config = {
    host: '...',
    port: 22,
    username: '...',
    password: '...'
};

var gulpSSH = new GulpSSH({
    ignoreErrors: false,
    sshConfig: config
});

gulp.task('upload', function () {
    return gulp.src(['file.zip'])
        .pipe(gulpSSH.sftp('write', 'test/file.zip'))
});

gulp.task('unzip', function () {
    return gulpSSH.exec("cd test && unzip file.zip");
});

cd test && -xvf file.tar

[16:17:55] Starting 'unzip'...
[16:17:57] gulp-ssh :: Executing :: cd test && -xvf file.tar
[16:17:58] Finished 'unzip' after 2.68 s